I did try Open Office at one stage because my MS Office wasn't working, I liked it for a while, basically the same as MS but free.
Open Office is pretty good, but if you have MS there is no uses going to OO, it just doesn't cut it
Although in saying that I will have a look at OO2.0 and see if it is any good.
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http://www.openoffice.org
Just in case people don't know where to get it from.